Automatic starting and stopping attachment for talking machines



' Fb. 11, 1930. c. e. HIB BARD 1,746,592

AUTOMATIC ST ARTING AND STQPPING ATTACHMENT FOR TAIJKING MACHINES Fi ed Feb. 8, 1929 fl /F 777m 4 ATTORNEYJ Patented Feh. 11, was

UNITE s'rarss CHARLES GILBERT HIBBARD, F SHEFFEELD, ENGLAND AUTOMATIC STARTING AND STOPPING ATTACHMENT FOR TALKING MACHINES Application filed February 3, 1928, Serial No. 338,604, and in Great Britain January 31, 1928.

This invention relating to gramophones, refers part1cularly to means for automat1cal- 1y starting and stopping the record table, the

braking devicelbeing of the kind comprising or a rotatable sleeve upon the pillar which carries two horizontal arms, a short downwardly turned finger on the backend of the tone arm operating between the horizontal arms 011 the vertical pillar or sleeve and moving said horizontal arms and pillar (or sleeve) either to the right or to the left, in one di rection to put pressure on the spring and its stud and so stop the rotation of the turntable and in the other direction to release the pressure of the stud from the table and so allow its rotation. The arm carrying pillar or sleeve is. provided with a flat surface on its periphery against which the Hat brake spring bears when in its non-operative position, but when the tone arm is travelling, it pushes one of the horizontal arms with it and partly rotates the pillar or its sleeve, thereby forcing the spring forward and the stud into engagement with the table.

The backward movement of the tone arm pushes one of the horizontal arms and partly rotates the sleeve or the pillar, thereby allowing the brake spring to. disengage from the table and so allowing the table to start revolving.

In the accompanying drawings I Fig; 1 is a side elevation of starting and stopping device according to the present in vention.

Fi 2 is a plan of Fig. 1.

Fig. 3 is a side elevation showing the device in contact with the tone arm.

Fig. 4 is a horizontal section, on an enlarged scale, on line XX of Fig. l; and Fig. 5 is a sectional view of a modification.

Referring to the drawings A/stud a secured to one end of a metal spring' strip b-forms the stop or brake. This spring bears against a short vertical sleeve c mounted upon a pillar c, the said sleeve being provided at its upper end with a horizontal member having two arms cl and d; a short downwarly turned finger e on the back end of the tonearm f operating between the horizontal arms (Z and (Z and moving said horizontal arms either to the right or to the left, in one direction to put pressure on the spring and its stud and so stop the rotation of the turntable 7t, and in the other direction to release the pressure of the stud from the table and so allow its rotation.

The sleeve 0 is provided with a flat surface on' its periphery againstwhich the flat spring 6 bears when in its non-operative position, but when the tone arm is travelling it pushes one of the horizontal arms with it and partly rotates the sleeve 0 thus forcing the spring forward and its stud a into engagement with the table. a

in a modification illustrated in Fig. 5 the horizontal member forming the two arms (Z and (Z may be formed integral with a pillar having a flat surface provided thereon, the said pillar being rotatable upon the base plate. The sleeve is dispensed with in this case.

I claim:

an automatic starting and stopping device for use on gramophones, comprising in combination, a resiliently supported brake member con'ip-rising an arm carrying a friction stud, a vertical member having a flat face contacting with said brakemember,and rotatable upon its axis, a two armed member secured to said vertical member, a downwardly ext-ending finger on tone arm, which operates when in use to move the said two armed member to the right or left, in one direction to cause the corner of the fiat face to press the brake member against the turntable and in the other direction to release the brake member from the turntable,substantially as described. In testimony whereof I afiix my signature.

CHARLES GILBERT HIBBARD. 

